It is, chronologically, a great step from these Egyptian MSS. to the oldest of our Greek and Latin MSS. Of Greek Biblical MSS. we have indeed few, but two of these are of considerable importance. One is the celebrated palimpsest codex of St. Matthew’s Gospel, known amongst Biblical critics as Z. The original text of this, in a beautiful large uncial character, was written not later than the sixth century. But at a later date (about the 13th century) this ancient writing was partially erased, and extracts from some of the Greek Fathers written over it. The old writing was detected by Dr. John Barrett, formerly Librarian, who published the text in what was called “engraved fac-simile,” which gives a very correct idea of the original writing, although the form of each individual letter may not always be exactly represented. Dr. Barrett added a learned dissertation on both the more ancient and the later contents of the MS. Dr. Tregelles, with the help of chemical applications, was enabled to read some letters which had escaped Dr. Barrett, and he published an account of his discoveries in a quarto tract. He also entered his new readings in a copy of Barrett’s work. Strange to say, these two records of Tregelles differed considerably, and accordingly, when the present writer undertook to re-edit Barrett’s text with Tregelles’ additions, he found it necessary to examine the MS. throughout. In so doing, he was able to read several hundred letters and marks (such as marks of quotation, numbers of sections and canons, etc.) which had escaped both Barrett and Tregelles, besides correcting a few errors. The additions and corrections were made on Barrett’s plates, and the new edition was published in 1880.[118] There is also a palimpsest fragment of Isaiah, apparently of somewhat earlier date, of which a lithographed fac-simile was included in the volume just mentioned. This fac-simile enabled Dr. Ceriani, of Milan, to identify the recension to which a certain group of MSS. of the Septuagint belongs.[119] Of the Gospels, there is a copy (63) in a cursive hand of the tenth century with scholia. Under a portrait of St. Matthew is traceable a palimpsest fragment of a Greek Evangelistarium. There was anciently another copy of the Gospels (64), which, however, was reported missing in 1742. Most probably it had been lent to Bulkeley (a Fellow), who in fact collated it for Mill. It is now in the library of the Marquis of Bute.